The Information Age |
The Early Republic
The Information Age
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In the 1990s, the number of students attending elementary school rose, and preschool enrollments
soared. Manufacturers responded with a wide range of “manipulatives”
for classroom use. |
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Handheld electronic calculators that plot functions are now found
in many classrooms. The Japanese firm of Casio introduced them into the
United States in 1986. This Casio calculator (below; left) was used at San Juan High
School in Citrus Heights, California. |
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Manufacturers in the United States, such as Texas Instruments and Hewlett Packard, soon introduced graphing calculators that could plot functions and manipulate symbols. These early models have now been replaced by more powerful calculators. |
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